Mineralogical and geochemical features and ore potential of apocarbonate-siliceous hydrothermally altered rocks in the Early Cambrian deposits of the Sinsk-Botomian Formation, Republic of Sakha (Yakutia)

The article describes new data on petrography and geochemistry of hydrothermally altered rocks in Early Cambrian deposits of the southeastern part of the Sinsk-Botomian Formation and their relationship with MVT-type lead-zinc mineralization. In this area, the mineralization was first identified as a hydrothermal metasomatic system and referred to the tectonogenic carbonate-siliceous hydrothermal formation. Their genetic relationship with the Late Devonian – Early Carboniferous of continental rifting in the eastern Siberian Platform is determined. The composition and type of the rockgenerating fluid is simulated. It is shown that halos of carbonate-siliceous hydrothermal mineralization, combined with multiplicative Pb, Zn, Mn, Ag and Sr anomalies in the bedrock can be used as one of the criteria for predicting the MVT-type mineralization in the Early Paleozoic carbonate cover of the Siberian platform.

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